Smoke-consuming furnace.



No. 800,949. PATENTED OCT. 3, 1905.

C. E. SLYE.

SMOKE CONSUMING FURNAGE.

APPLxcAnoH num AUG. as, 1904.

A urns-Sunni' 1.

, IImm 2% No. 800,949. PATENTED OCT. 3, 1905. G. E. SLYE. SMOKE CONSUMING FURNAGB.

APPLICATION FILED AUG. 29, 1904.

4 SHEETS-SHEET 3A ooooooo' QooQonc@ @ooooooo ooenooo COQ@ No. 800,949. PATBNTED 00T. 3, 1905. 0. E. SLYB.

SMOKE CONSU'MING PURNACE.

AEQPLIGATION FILED AUG. 29, 1904. v

4 SHEETS--SHEET 4.

UNITED STATES PATENT OFFICE.

CLARENCE E. SLYE, OF SANDWICH, ILLINOIS, ASSIGNOR OF ONE-HALF TO ADAM REDER, OF CHICAGO, ILLINOIS.

SMOKE-CONSUNIING FURNACE.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed August 29,1904. Serial No. 222,663.

To (all whom t may concern.'

Be it known that I, CLARENCE E. SLYn, a citizen of the United States, residing at Sandwich, in the county of Dekalb and State of Illinois, have invented certain new and useful Improvements in Smoke Consuming Furnaces; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a novel construction in a smoke-consuming furnace, the obliect being to provide a simple, efcient, and durable device of this character particularly adapted for boilers; and it consists in the features of construction and combinations of parts hereinafter fully described and claimed.

In the accompanyingdrawings, illustrating' my invention,Figure lis a view of aboiler-f-urnace constructed in accordance with my invention, one of the side walls beingremoved. Fig. 2 is a plan section of the same on the line 2 2 of Fig. 1, the boiler being omitted. Figs. 3 and 4 are vertical transverse sections of the same on the lines 3 3 and 4 4, respectively, of Fig. 1. Fig. 5 is a detail section of one of the baflie-wall water-drums on the line 5 5 of Fig. 1. Fig. 6 is a view similar to Fig. 1, showing a modified form of construction of my furnace. Fig. 7 is a detail plan section on the line 7 7 of Fig. 6.

The consumption of smoke which consists largely of combustible gases can be accomplished only by the admixture of oxygen therewith while such gases are sufficiently hot to ignite, such oxygen being most conveniently introduced by admission of air. To accomplish the proper admixture of such air with the smoke at a point sufiiciently near the point of greatest heat in the furnace as to assure ignition requires the introduction into the path of the hot gases or smoke of devices for retarding their passage, and thus agitating same, so that air admitted at thelpoint of agitation will be enabled tolintermingle with such smoke or gases and the latter consumed. The retarding of such hot gases requires the use of suitable bafiie-walls, and these when built in the ordinary manner break down very easily by reason of the fact that they are subjected to intense heat.

My present invention relates more particularly to the construction and utility of the baffle-walls as a supplemental means for heating the water in the boiler and the feed-water introduced into the latter, as well as a means for introducing air at the proper points for its admixture with the smoke or gases.

My invention consists, further, in so constructing the furnace that the air introduced therein at various points will be heated before its contact with the fuel and smoke or gases and in so arranging the air-distributing means as to insure uniformity and sufficiency of such air.

To these and other ends my furnace comprises the firing-chamber 1, containing the grate 2, beneath which is the ash-pit 3, which is divided by a lateral wall 4: into two compartments 5 and 6, there being a large opening in said wall 4, which is controlled by a suitable gate 7, which is capable of being adjusted to various positions in any suitable manner.

In place of the ordinary bridge-wall generally used I provide a mud-drum 8, which forms the inner end wall of the ash-pit, or, more properly, of the compartment 6 thereof, and above said mud-d rum I provide a U-shaped horizontally-disposed water-drum 9, which is suitably supported upon a bar 10, upon which one arm of said drum 9 rests, and by a plate 11, upon which the other arm rests, said plate 1l being extended rearwardly and supported at its rear edge upon a vertical partition-wall 12, the latter being provided with one or more openings controlled by a suitable gate or gates 13. The said mud-drum 8 and drum 9 are substantial] y equal in width, and between the upper wall of the former and the bottom of the latter or its supports spaces 1A and 15 are provided, which form air-iues, as hereinafter described. An inclined plate 16 rests atits rear end upon the rear upper corner of the mud-drum 8 and at its forward end is supported on a level with the lower end of the bar 10 and cuts olf communication between the compartment 6 of the ash-pit and the chamber or lateral air-flue 17 formed between the rear wall of the drum 8 and the plate 11 and the wall 12, and at the same time forms a deflecting-plate to cause ashes which may find their way into the opening or lateral flue 18 between the arms of the drum 9 to be deposited in said chamber 17. The said compartments 5 and 6 of the ash-pit communicate with air-fines 19 and 20, respectively,

IOO

which are formed, preferably, in the walls or setting supporting the boiler 2l and extending to the rear ends thereof. Flues 22, built inwardly of and parallel with the flues 20, communicate with the lateral flue or chamber 1T, and openings 23 are provided to establish communication between said lines 2O and the lateral flue or space 14, which in turn communicates with the chamber 6 of the ash-pit through the foraminated wall Q4. The areas of said respective flues 19, 20, and QQ and the number, size, and location of the openings establishing communication between said l'lues and the lateral Vlines and compartments may be adjusted to suit conditions and suitable dampers provided in said fines to control the same, as indicated in Fig. l. Substantially over the middle of said grate 2 and substantially an equal distance back of the drum 9 l support baflie-walls 25 and 26, each of which comprises a U-shaped water-drum 27 and 28, respectively,'upon which brick walls 29 are supported, which till the entire spaces between the upper walls of said drums and the lower part of the boiler, said walls 29 being hollow to provide air-fines 3l and 32, which communicate with the spaces between the arms of said drums 27 and 28 and at their ends with the forward ends of fines 33 and 34, which extend to the rear end of the boiler-setting and there admit air. The said baffle-walls are preferably inclined rearwardly, so that smoke or gases impinging against the front faces of same will be deflected downwardly and rearwardly. l

So far as the smoke-consuming means are concerned I have complet-ed my description, and l will now proceed to describe the operation thereof.

Smoke or gases produced in stoking and until the volatile constituents of the coal have been substantially exhausted pass upwardly and toward the bridge-wall or drum 9. During their passage they are partially deflected downwardly by the baffle-wall 26 and partly admixed with the air entering the furnace through the flues 33 and 31. The main body of the fire in the furnace is maintained on the forward part of the grate over the compartment of the ash-pit 3, and by reason of the pitch of the grate toward the rear a lire, mainly of live coal, is maintained over the compartment 6 of said ash-pit, this portion of the iire requiring relatively less air. A sufficient volume of air is introduced into and uniformly distributed throughout said compartment 6 of said ash-pit to provide a surplus of oxygenMthat is, more than enough to maintain the coals on this portion of the grate incandescent. The surplus of air thus introduced passes through the bed of coal and is intensely heated thereby and passing upwardly niingles with the smoke or gases in their passage. By the d rum 9 such commingled air and gases, which latter are now for the main part consumed, are deflected upwardly and in passing over said drum 9 are further admixed with hot air` such air being heated during its passage through the fines 22, and after passing' over said drum 9 said gases are again defiected downwardly by the baffle-wall 27 and still further admixed with air admitted through the fines 3e and 32, so that any combustible gases remaining are consumed before the passage of the products of combustion through the boiler-lines. Beyond the baffle-wall .29 a second bridge-wall 3:3 of brick is provided, which serves to deflect the hot products of combustion upwardly to irnpinge against the boiler. The said drums 9, 2T, and 28 while serving as bridge and baliie walls, respectively, are utilized as auxiliary means for heatingwater, which in turn serves to prevent said members from becoming overheated, and thus burning out and collapsing, and YlV am further enabled by their use and the use of the muddrum 8 to prevent to a large extent the deposit o'f lime and the like mineral and other imrmrities carried by the water from being deposited in the boiler. 1t is well known that such mineral constituents and impurities are deposited mostly at the point of least circulation or agitation of water in the boiler, and most generally the mineral constituents solidify and are precipitated when the temperature of the water reaches the boiling'- point or somewhat above the same, so that as a rule while the boiler in full operation the water in the hottest portion of same has been freed of such impurities, while that in the part more distant from the firing-chamber deposits such impurities in that portion of the boiler. The fresh or feed water is therefore generally introduced in the cooler portion of the boiler, so as to be freed of such impurities before it reaches the hotter portions. To the blow-off pipe 36, therefore, the feed-water pipe 3T is connected, such pipe 36 having a valve 38 interposed beyond the point of connection of the pipe 37 therewith and the latter having a valve 39 interposed therein.

ln addition to the valve 38, interposed beyond the point of connection of the pipe 37 with the pipe 36, l provide a valve et() in the latter nearer its point of connection with the bottom of the boiler, and opposite or adjacent the point of connection of said pipe 3T therewith I connect a pipe 4l, which extends to the free end of the rear arm of the drum 28, adjacent the lower end of the latter. From the upper portion of the free end of the forward arm of said drum 28 a pipe 42 extends to the lower portion of the free end of the forward arm of the drum 2T. Frein the upper portion of the free end of the rearward arm of said drum 27 a pipe 43 extends to the lower portion of the free end of the forward arm of the bridge-drum 9, and from a point IOO IOS

IIO

IIS

adjacent the upper portion of the free end of the rear arm of the latter a pipe 44 extends downwardly to the lower portion of said muddrum 8, said pipe 44 passing through the upper wall of said mud-drum and having' a valve 45 interposed therein. An outlet-pipe 46, having its mouth in the upper portion of said mud-drum at its other end, leaves the latter through the lower portion of the rear wall and extends upwardly and then forward to the front end of the boiler.

A cross connection is made, by means of a pipe 47, having a valve 48 interposed therein, between the pipe 44 above the valve 45 therein and the pipe 46 above a valve 49, interposed therein, the stems of said valves 45, 47, and 49 extending' through the side walls of the furnace or setting'. By means of said cross connection the water may be made to b v-pass the mud-drum, so as to enable the latter to be cleaned, this being preferably accomplished by means of steam introduced into said mud-drum through the pipe 5() to eject the impurities from a valve-controlled blowofl' 5l. By means of the said connections water is taken from the cooler portion of the ,boiler or from the feed-water pipe 37 and caused to circulate through the said drums 27, 2S, and 9 and during its passage to attain a temperature at which the mineral constituents are most readily precipitated. Such water iiows very rapidly through said drums, the cross-sectional area of the passages of which are substantially equal to that of the pipes 41 42 43, &c., and throug'h said pipes, so that no precipitates can readily lodge in the latter, but are carried into the mud-drum. The iiow through the latter is very slow, and consequently all impurities and precipitates will be deposited therein, and the now thoroughly heated water will pass into the hottest or front portion of the boiler.

In Fig. 6 I have shown a slight modification, the operation of which is identical with that of the construction shown in Figs. 1 to 5, inclusive,such modification consisting, mainly, in substituting for the drums 9, 27, and 28 (which I term double drums) the single drums 52, 53, and 54, each of which is, however, substantially U-shaped, inasmuch is there is interposed in each of said drums a partition-wall 55, which extends from one end thereof to a point adjacent its other end, as shown in Fig. 7. Instead of forming double or hollow baiile walls in which flues are formed the fresh air is introduced in from each bale-wall or`drum; but the operation and effect remains the same. In place of the rear arm of the drum 9 a brick bridge-wall 56 is built upon the plate ll.

By means of my construction the combustible gases are completely consumed and pass in a direction substantially opposite to that in which the water flows through the bafe and bridge walls in passing from the rear end portion of the boiler to the forward end of same, which is conducive to the production of the best results.

I claim as my invention-- 1. In a smoke-consuming'furnace, the combination with the firing-chamber, of the ashpit below the same divided laterally into two chambers each having' air-inlets, a bridge-Wall having formed therein horizontal and vertical air-fines, independent air-inlets communicating with said horizontal and vertical air-fiues respectively, said horizontal air-Hue communicating' with the rearward chamber of said ash-pit, a bathe-wall in the upper portion of said tiring-chamber, and air-inlets adjacent same.

2. In a smoke-consuming furnace, the combination with a firing-chamber, of a double bridg'e-wall at one end of same, containing a lateral air-flue open at its upper end, an ashpit divided between its ends, and having its inner chamber communicating with said iluein said bridge-wall below the grate, ofa baflle-wall in the u pper portion of said firing-chamber, airiiues entering said firing-chamber at its sides adjacent the said baille-wall, the latter being' adapted to deii ect the admitted air downwardly to commingle with the hot gases, air-fines entering the upper portion of said furnace rearwardly of said bridge-wall, and a second bafe-wall disposed in the path of the admitted air to deflect same downwardly.

3. A smoke-consuming' furnace comprising in combination, a firing-chamber, an ash-pit below divided laterally into two compartments, a double bridge-wall having an airspace communicating with the inner chamber of said ash-pit and with air-supply fines, a lateral air-chamber behind said bridge-wall, flues communicating therewith, said bridgewall having a vertically-disposed passage communicating with said air-flue and discharging from the upper end of said bridge-wall` airflues communicating' with said tiring-chamber in its upper end and with the rear portion of said furnace and two baffle-walls disposed in said furnace and having' lateral liues open at their lower ends and communicating with said air-fines.

4. In a smoke-consuming furnace, the combination with the firing-chamber and an ashpit below the same divided laterally into two compartments, of a bridge-wall disposed at the inner end of the ash-pit and firing-chamber and comprising a mud-drum and a waterdrum disposed above the same there `being a vertical air-passage through said water-drum and between the latter and said mud-drum, air-fines communicating' with the ends of said passages, a baffle-wall in the upper portion of said tiring-chamber consisting of a waterdrum and walls disposed above same and supported thereon, said baille-wall having a lateral air-space open at its lower end, air-fines communicating with said air-space, and con- IOO nection between said mud and water drums and a source of supply of water.

5. In a smoke-consuming furnace, the combination with the liring-chamber and an ashpit below the same divided laterally into two compartments, of a water-containing' bridgewall at one end of said firing-chamber and said ash-pit, and having air-passages discharging' into one compartment of said ash-pit and above said bridge-wall, an air-flue communicating' with said air-passages, a baiiie-wall in the upper portion of said firing-cham ber comprising a water-containing' support and a wall supported thereon, said support and wall having a lateral air-space open at its lower end., air-fines communicating' with said air-space, and connection between said bridge-wall and support for said baiiie-wall and a source of supply of water.

6. A smoke-consuming furnace for boilers, com prising a firing-chamber, an ash-pit below the same divided laterally into two compartments, a bridge-wall at the inner end of said firing-chamber and ash-pit and comprising a mud-drum and a water-drum disposed above the same, a baflie-wall disposed in the upper portion of said firing-chamber and comprising a water-drum and a wall supported thereon, said bafiie-wall and bridge-wall being adapted to cause the hot g'ases to travel in a zigzag direction toward the chimney-flue, lateral air-fines disposed above the grate and in the bridge-wall for supplying' fresh air to be mixed with said hot gases, air-flues disposed in the walls of the furnace and communicating with said lateral lines, and connection between said water-drums and mud-drum and the boiler.

7. A smoke-consuming furnace for boilers, comprising a firing-chamber, an ash-pit below the same divided laterallyV into two compartments, a bridge-wall at the inner end of said firing-chamber and ash-pit and comprising' a mud-drum and a water-drum disposed above the same, a bafiie-wall disposed in the upper portion of said firing-chamber and comprising' a water-drum and a wall supported thereon, a second baffle-wall disposed in the upper portion of the furnace behind the bridge-wall, and comprising a water-drum and a wall supported thereon, lateral air-fines disposed above the g'rate and in the rear upper portion of said furnace and in said bridge-wall for supplying fresh air to be mixed with said hot gases during their passage, air-flucs disposed at the sides of the furnace and communicating with said lateral fines, and connection between said mud-drum and'water-drums and the'boiler to maintain constant circulation in said drums.

8. The combination with a boiler, of a smoke-consuming furnace beneath the same comprising' a firing-chamber provided in its upper end with a baffle-Wall, having' a watercontaining support, a water-containing bridgewall, a second baiiie-wall beyond. said bridg'ewall, having a water-containing' support, a plurality of air-fines communicating with said furnace adjacent said bafl'le and bridge walls and adapted to be deiiected by the latter, a mud-drum constituting' a part of said bridg'ewall, and connections between said water-containing supports of said baffle-walls, bridgewall and mud-drum and said boiler to cause water to pass from the rear end portion of the latter through said supports and said bridge-wall to the forward portion of the boiler.

9. The combination with a boiler, of a smoke-consuming furnace beneath the same comprising a firing-chamber, provided in its upper end with a baliie-Wall having' a watercontaining support, a water-'containing bridg'ewall. a second baiiie-wall beyond said bridg'ewall having' a water-containing' support, a plurality of air-fines communicating' with said furnace adjacent said baflie and bridge walls and adapted to be defiected by the latter, a mud-drum constituting a part of said bridg'ewall, and connections between said watercontaining supports of said bafilewalls, bridge-wall and mud-drum and said boiler to cause water to pass from the rear end portion of the latter through said supports and said bridge-wall to the forward portion of the boiler, a feed-water-supply pipe interposed in said connection at one point and valves cone trolling said connections and said feed-water pipe.

In testimony whereof I have signed my name in presence of two subscribing witnesses.

CLARENCE E. SLY E.

vitnessesz RUDOLPH WM. Lorz, F. SCHLOTFELD.

IOO 

